c- With the ball in the fully open or closed position the maximum seat hydrostatic test pressure should be be performed at a pressure 1.1 times the maximum pressure rating in accordance with API6D. In addition a low pressure pneumatic test of 700KPA should be performed in accordance with API6D. Seats should be tested bi-directionally. 8 . 0 OPERATION & MAINTENANCE 8.1 OPERATION INSTRUCTION a- Hand wheel and gear operated ball valve have to be fully opened and closed to check the valve is correctly operating. b- In the case of automated valves, the instructions from the actuator’s manufacturer shall be supplied separately. In this case, automated valves shall be operated with the required energy source (electric, pneumatic, hydraulic) to check correct functioning. c- Do not change any settings such as position stops or speed or torque governing devices. d- Ball valves are provided with: • Thrust and radial PTFE/steel bearing; • Contact surface between ball and seats is anti-wearing and self lubricating. Hence no lubrication and maintenance activity should be required. Hence since the valves normally operate with industrial fluids and gases which could have a range of impurities, a preventative maintenance program is required as part of plant management procedures. 8.2 LUBRICATION a- Ball valves require no lubrication for normal operation. If required, it’s possible to lubricate the stem and the seats through emergency sealant injection grease-check valve where required when these nipples are provided. This is only in the event of leakage or if valve is difficult to open. The stem injection nipple can be optionally greased to ensure ease of operation especially for automated valves. If no leakage, it’s not required or advisable to lubricate seat sealant injection nipples as the grease may attract debris which could damage the seats longer term. See 8.2b below if seat lubrication is desired or required. Never unscrew complete sealant injection nipples from body as they are under line pressure. Always replace protective caps where fitted to sealant nipples after use. b- Some end users prefer to lubricate/grease the valve seats at injection points on the seats of the valve located on the valve body. Quantity of grease required can very greatly depending on the valve size, cycle frequency and service condition. As a general guideline use 30 ml (1 ounce) of lubricant per inch size of valve into each seat fitting. Use proper lubricant/grease for you line media application to ensure Australian Pipeline Valve - Installation, Operation and Maintenance Manual 16 SIDE ENTRY 2P TRUNNION BALL VALVES API6D STANDARD - FS9000 SERIES The valve is only intended to block or allow flow through the pipeline. The valve should only be used in either fully open or fully closed position. Do not use this valve to regulate flow by partially opening or partially closing the valve. The valve should not stay in a semi-open or semi-closed state for more than two minutes.